Essays on fall fertilizer application

dc.contributor.advisor Catherine L. Kling
dc.contributor.advisor Joseph A. Herriges
dc.contributor.advisor Jinhua Zhao
dc.contributor.author Nurmakhanova, Mira
dc.contributor.department Economics
dc.date 2018-08-22T18:37:14.000
dc.date.accessioned 2020-06-30T07:46:52Z
dc.date.available 2020-06-30T07:46:52Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2008
dc.date.issued 2008-01-01
dc.description.abstract <p>Increased use of nitrogen fertilizer in agricultural production has contributed to increased food production but also contributed to elevated concentration levels of nitrates in groundwater and surface water. High concentration levels of nitrates in drinking water supplied from groundwater and surface water have become a public concern because of their risks to human health.;One way to reduce nitrogen losses is to develop and apply technologies that enable farmers to more accurately match the amount and timing of fertilizer application to crop growth needs. It is best to apply nitrogen as close as possible to when crop needs it most, proper timing is most important with nitrogen fertilizer. Fall application of nitrogen increases the loss of nitrogen through denitrification, it also gives nitrogen time to leach through the root zone and into groundwater.;The first chapter gives overview of the timing of fertilizer application. The purpose of second chapter is to examine the effect of timing of fertilizer application on total amount of nitrogen fertilizer applied. The goals of the third chapter are twofold. First, it determines which factors influence the use of fall fertilizer application and conservation tillage in a modeling framework that recognizes the interrelationship between the two decisions. Second, it examines the implications of adopting these two practices for nitrogen productivity, which is measured by crop yield. The purpose of the forth paper is to develop a contract schedule to induce land-based nonpoint polluters to choose second-best input vectors for their soil type. Specifically, it concentrates on the issue of fall and spring nitrogen fertilizer application. It is assumed that the environmental agency can monitor the total amount of nitrogen applied; however, it cannot observe amounts of nitrogen applied in the fall and spring. Therefore, in addition to asymmetric information about soil type, this model also takes into account the moral hazard problem which appears because of unobserved actions taken by some farmers.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/15740/
dc.identifier.articleid 16739
dc.identifier.contextkey 7042995
dc.identifier.doi https://doi.org/10.31274/rtd-180813-16947
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/15740
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/69402
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/15740/3330736.PDF|||Fri Jan 14 20:45:54 UTC 2022
dc.subject.disciplines Agricultural and Resource Economics
dc.subject.disciplines Agricultural Economics
dc.subject.disciplines Agriculture
dc.subject.disciplines Economics
dc.subject.keywords Economics
dc.title Essays on fall fertilizer application
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 4c5aa914-a84a-4951-ab5f-3f60f4b65b3d
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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